Antonio Quartulli | 0b87393 | 2013-01-04 03:05:31 +0100 | [diff] [blame^] | 1 | /* Copyright (C) 2009-2013 B.A.T.M.A.N. contributors: |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 2 | * |
| 3 | * Marek Lindner, Simon Wunderlich |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of version 2 of the GNU General Public |
| 7 | * License as published by the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, but |
| 10 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | * General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 17 | * 02110-1301, USA |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 18 | */ |
| 19 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 20 | #include "main.h" |
Antonio Quartulli | 785ea11 | 2011-11-23 11:35:44 +0100 | [diff] [blame] | 21 | #include "distributed-arp-table.h" |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 22 | #include "originator.h" |
| 23 | #include "hash.h" |
| 24 | #include "translation-table.h" |
| 25 | #include "routing.h" |
| 26 | #include "gateway_client.h" |
| 27 | #include "hard-interface.h" |
| 28 | #include "unicast.h" |
| 29 | #include "soft-interface.h" |
Simon Wunderlich | 2372138 | 2012-01-22 20:00:19 +0100 | [diff] [blame] | 30 | #include "bridge_loop_avoidance.h" |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 31 | |
Antonio Quartulli | dec0507 | 2012-11-10 11:00:32 +0100 | [diff] [blame] | 32 | /* hash class keys */ |
| 33 | static struct lock_class_key batadv_orig_hash_lock_class_key; |
| 34 | |
Sven Eckelmann | 03fc7f8 | 2012-05-12 18:34:00 +0200 | [diff] [blame] | 35 | static void batadv_purge_orig(struct work_struct *work); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 36 | |
Sven Eckelmann | b8e2dd1 | 2011-06-15 15:08:59 +0200 | [diff] [blame] | 37 | /* returns 1 if they are the same originator */ |
Sven Eckelmann | 03fc7f8 | 2012-05-12 18:34:00 +0200 | [diff] [blame] | 38 | static int batadv_compare_orig(const struct hlist_node *node, const void *data2) |
Sven Eckelmann | b8e2dd1 | 2011-06-15 15:08:59 +0200 | [diff] [blame] | 39 | { |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 40 | const void *data1 = container_of(node, struct batadv_orig_node, |
| 41 | hash_entry); |
Sven Eckelmann | b8e2dd1 | 2011-06-15 15:08:59 +0200 | [diff] [blame] | 42 | |
| 43 | return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0); |
| 44 | } |
| 45 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 46 | int batadv_originator_init(struct batadv_priv *bat_priv) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 47 | { |
| 48 | if (bat_priv->orig_hash) |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 49 | return 0; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 50 | |
Sven Eckelmann | 1a8eaf0 | 2012-05-12 02:09:32 +0200 | [diff] [blame] | 51 | bat_priv->orig_hash = batadv_hash_new(1024); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 52 | |
| 53 | if (!bat_priv->orig_hash) |
| 54 | goto err; |
| 55 | |
Antonio Quartulli | dec0507 | 2012-11-10 11:00:32 +0100 | [diff] [blame] | 56 | batadv_hash_set_lock_class(bat_priv->orig_hash, |
| 57 | &batadv_orig_hash_lock_class_key); |
| 58 | |
Antonio Quartulli | 7241444 | 2012-12-25 13:14:37 +0100 | [diff] [blame] | 59 | INIT_DELAYED_WORK(&bat_priv->orig_work, batadv_purge_orig); |
| 60 | queue_delayed_work(batadv_event_workqueue, |
| 61 | &bat_priv->orig_work, |
| 62 | msecs_to_jiffies(BATADV_ORIG_WORK_PERIOD)); |
| 63 | |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 64 | return 0; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 65 | |
| 66 | err: |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 67 | return -ENOMEM; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 68 | } |
| 69 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 70 | void batadv_neigh_node_free_ref(struct batadv_neigh_node *neigh_node) |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 71 | { |
Marek Lindner | 44524fc | 2011-02-10 14:33:53 +0000 | [diff] [blame] | 72 | if (atomic_dec_and_test(&neigh_node->refcount)) |
Paul E. McKenney | ae179ae | 2011-05-01 23:27:50 -0700 | [diff] [blame] | 73 | kfree_rcu(neigh_node, rcu); |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 74 | } |
| 75 | |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 76 | /* increases the refcounter of a found router */ |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 77 | struct batadv_neigh_node * |
| 78 | batadv_orig_node_get_router(struct batadv_orig_node *orig_node) |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 79 | { |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 80 | struct batadv_neigh_node *router; |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 81 | |
| 82 | rcu_read_lock(); |
| 83 | router = rcu_dereference(orig_node->router); |
| 84 | |
| 85 | if (router && !atomic_inc_not_zero(&router->refcount)) |
| 86 | router = NULL; |
| 87 | |
| 88 | rcu_read_unlock(); |
| 89 | return router; |
| 90 | } |
| 91 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 92 | struct batadv_neigh_node * |
| 93 | batadv_neigh_node_new(struct batadv_hard_iface *hard_iface, |
| 94 | const uint8_t *neigh_addr, uint32_t seqno) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 95 | { |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 96 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
| 97 | struct batadv_neigh_node *neigh_node; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 98 | |
Sven Eckelmann | 704509b | 2011-05-14 23:14:54 +0200 | [diff] [blame] | 99 | neigh_node = kzalloc(sizeof(*neigh_node), GFP_ATOMIC); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 100 | if (!neigh_node) |
Marek Lindner | 7ae8b28 | 2012-03-01 15:35:21 +0800 | [diff] [blame] | 101 | goto out; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 102 | |
Marek Lindner | 9591a79 | 2010-12-12 21:57:11 +0000 | [diff] [blame] | 103 | INIT_HLIST_NODE(&neigh_node->list); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 104 | |
Marek Lindner | 7ae8b28 | 2012-03-01 15:35:21 +0800 | [diff] [blame] | 105 | memcpy(neigh_node->addr, neigh_addr, ETH_ALEN); |
Marek Lindner | e3b0d0d | 2012-03-17 15:28:32 +0800 | [diff] [blame] | 106 | spin_lock_init(&neigh_node->lq_update_lock); |
Marek Lindner | 1605d0d | 2011-02-18 12:28:11 +0000 | [diff] [blame] | 107 | |
| 108 | /* extra reference for return */ |
| 109 | atomic_set(&neigh_node->refcount, 2); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 110 | |
Sven Eckelmann | 39c75a5 | 2012-06-03 22:19:22 +0200 | [diff] [blame] | 111 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
Sven Eckelmann | 1eda58b | 2012-05-12 13:48:58 +0200 | [diff] [blame] | 112 | "Creating new neighbor %pM, initial seqno %d\n", |
| 113 | neigh_addr, seqno); |
Marek Lindner | 7ae8b28 | 2012-03-01 15:35:21 +0800 | [diff] [blame] | 114 | |
| 115 | out: |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 116 | return neigh_node; |
| 117 | } |
| 118 | |
Sven Eckelmann | 03fc7f8 | 2012-05-12 18:34:00 +0200 | [diff] [blame] | 119 | static void batadv_orig_node_free_rcu(struct rcu_head *rcu) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 120 | { |
Marek Lindner | 9591a79 | 2010-12-12 21:57:11 +0000 | [diff] [blame] | 121 | struct hlist_node *node, *node_tmp; |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 122 | struct batadv_neigh_node *neigh_node, *tmp_neigh_node; |
| 123 | struct batadv_orig_node *orig_node; |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 124 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 125 | orig_node = container_of(rcu, struct batadv_orig_node, rcu); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 126 | |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 127 | spin_lock_bh(&orig_node->neigh_list_lock); |
| 128 | |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 129 | /* for all bonding members ... */ |
| 130 | list_for_each_entry_safe(neigh_node, tmp_neigh_node, |
| 131 | &orig_node->bond_list, bonding_list) { |
| 132 | list_del_rcu(&neigh_node->bonding_list); |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 133 | batadv_neigh_node_free_ref(neigh_node); |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 134 | } |
| 135 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 136 | /* for all neighbors towards this originator ... */ |
Marek Lindner | 9591a79 | 2010-12-12 21:57:11 +0000 | [diff] [blame] | 137 | hlist_for_each_entry_safe(neigh_node, node, node_tmp, |
| 138 | &orig_node->neigh_list, list) { |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 139 | hlist_del_rcu(&neigh_node->list); |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 140 | batadv_neigh_node_free_ref(neigh_node); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 141 | } |
| 142 | |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 143 | spin_unlock_bh(&orig_node->neigh_list_lock); |
| 144 | |
Sven Eckelmann | 88ed1e77 | 2012-05-12 02:09:40 +0200 | [diff] [blame] | 145 | batadv_frag_list_free(&orig_node->frag_list); |
Sven Eckelmann | 08c36d3 | 2012-05-12 02:09:39 +0200 | [diff] [blame] | 146 | batadv_tt_global_del_orig(orig_node->bat_priv, orig_node, |
| 147 | "originator timed out"); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 148 | |
Antonio Quartulli | a73105b | 2011-04-27 14:27:44 +0200 | [diff] [blame] | 149 | kfree(orig_node->tt_buff); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 150 | kfree(orig_node->bcast_own); |
| 151 | kfree(orig_node->bcast_own_sum); |
| 152 | kfree(orig_node); |
| 153 | } |
| 154 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 155 | void batadv_orig_node_free_ref(struct batadv_orig_node *orig_node) |
Marek Lindner | 7b36e8e | 2011-02-18 12:28:10 +0000 | [diff] [blame] | 156 | { |
| 157 | if (atomic_dec_and_test(&orig_node->refcount)) |
Sven Eckelmann | 03fc7f8 | 2012-05-12 18:34:00 +0200 | [diff] [blame] | 158 | call_rcu(&orig_node->rcu, batadv_orig_node_free_rcu); |
Marek Lindner | 7b36e8e | 2011-02-18 12:28:10 +0000 | [diff] [blame] | 159 | } |
| 160 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 161 | void batadv_originator_free(struct batadv_priv *bat_priv) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 162 | { |
Sven Eckelmann | 5bf74e9 | 2012-06-05 22:31:28 +0200 | [diff] [blame] | 163 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 164 | struct hlist_node *node, *node_tmp; |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 165 | struct hlist_head *head; |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 166 | spinlock_t *list_lock; /* spinlock to protect write access */ |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 167 | struct batadv_orig_node *orig_node; |
Antonio Quartulli | c90681b | 2011-10-05 17:05:25 +0200 | [diff] [blame] | 168 | uint32_t i; |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 169 | |
| 170 | if (!hash) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 171 | return; |
| 172 | |
| 173 | cancel_delayed_work_sync(&bat_priv->orig_work); |
| 174 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 175 | bat_priv->orig_hash = NULL; |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 176 | |
| 177 | for (i = 0; i < hash->size; i++) { |
| 178 | head = &hash->table[i]; |
| 179 | list_lock = &hash->list_locks[i]; |
| 180 | |
| 181 | spin_lock_bh(list_lock); |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 182 | hlist_for_each_entry_safe(orig_node, node, node_tmp, |
| 183 | head, hash_entry) { |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 184 | hlist_del_rcu(node); |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 185 | batadv_orig_node_free_ref(orig_node); |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 186 | } |
| 187 | spin_unlock_bh(list_lock); |
| 188 | } |
| 189 | |
Sven Eckelmann | 1a8eaf0 | 2012-05-12 02:09:32 +0200 | [diff] [blame] | 190 | batadv_hash_destroy(hash); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 191 | } |
| 192 | |
| 193 | /* this function finds or creates an originator entry for the given |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 194 | * address if it does not exits |
| 195 | */ |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 196 | struct batadv_orig_node *batadv_get_orig_node(struct batadv_priv *bat_priv, |
| 197 | const uint8_t *addr) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 198 | { |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 199 | struct batadv_orig_node *orig_node; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 200 | int size; |
| 201 | int hash_added; |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 202 | unsigned long reset_time; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 203 | |
Sven Eckelmann | da64119 | 2012-05-12 13:48:56 +0200 | [diff] [blame] | 204 | orig_node = batadv_orig_hash_find(bat_priv, addr); |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 205 | if (orig_node) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 206 | return orig_node; |
| 207 | |
Sven Eckelmann | 39c75a5 | 2012-06-03 22:19:22 +0200 | [diff] [blame] | 208 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
| 209 | "Creating new originator: %pM\n", addr); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 210 | |
Sven Eckelmann | 704509b | 2011-05-14 23:14:54 +0200 | [diff] [blame] | 211 | orig_node = kzalloc(sizeof(*orig_node), GFP_ATOMIC); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 212 | if (!orig_node) |
| 213 | return NULL; |
| 214 | |
Marek Lindner | 9591a79 | 2010-12-12 21:57:11 +0000 | [diff] [blame] | 215 | INIT_HLIST_HEAD(&orig_node->neigh_list); |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 216 | INIT_LIST_HEAD(&orig_node->bond_list); |
Marek Lindner | 2ae2daf | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 217 | spin_lock_init(&orig_node->ogm_cnt_lock); |
Marek Lindner | f3e0008 | 2011-01-25 21:52:11 +0000 | [diff] [blame] | 218 | spin_lock_init(&orig_node->bcast_seqno_lock); |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 219 | spin_lock_init(&orig_node->neigh_list_lock); |
Antonio Quartulli | a73105b | 2011-04-27 14:27:44 +0200 | [diff] [blame] | 220 | spin_lock_init(&orig_node->tt_buff_lock); |
Marek Lindner | 7b36e8e | 2011-02-18 12:28:10 +0000 | [diff] [blame] | 221 | |
| 222 | /* extra reference for return */ |
| 223 | atomic_set(&orig_node->refcount, 2); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 224 | |
Antonio Quartulli | 1707157 | 2011-11-07 16:36:40 +0100 | [diff] [blame] | 225 | orig_node->tt_initialised = false; |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 226 | orig_node->bat_priv = bat_priv; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 227 | memcpy(orig_node->orig, addr, ETH_ALEN); |
Antonio Quartulli | 785ea11 | 2011-11-23 11:35:44 +0100 | [diff] [blame] | 228 | batadv_dat_init_orig_node_addr(orig_node); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 229 | orig_node->router = NULL; |
Antonio Quartulli | c8c991b | 2011-07-07 01:40:57 +0200 | [diff] [blame] | 230 | orig_node->tt_crc = 0; |
| 231 | atomic_set(&orig_node->last_ttvn, 0); |
Antonio Quartulli | 2dafb49 | 2011-05-05 08:42:45 +0200 | [diff] [blame] | 232 | orig_node->tt_buff = NULL; |
Antonio Quartulli | a73105b | 2011-04-27 14:27:44 +0200 | [diff] [blame] | 233 | orig_node->tt_buff_len = 0; |
| 234 | atomic_set(&orig_node->tt_size, 0); |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 235 | reset_time = jiffies - 1 - msecs_to_jiffies(BATADV_RESET_PROTECTION_MS); |
| 236 | orig_node->bcast_seqno_reset = reset_time; |
| 237 | orig_node->batman_seqno_reset = reset_time; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 238 | |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 239 | atomic_set(&orig_node->bond_candidates, 0); |
| 240 | |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 241 | size = bat_priv->num_ifaces * sizeof(unsigned long) * BATADV_NUM_WORDS; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 242 | |
| 243 | orig_node->bcast_own = kzalloc(size, GFP_ATOMIC); |
| 244 | if (!orig_node->bcast_own) |
| 245 | goto free_orig_node; |
| 246 | |
| 247 | size = bat_priv->num_ifaces * sizeof(uint8_t); |
| 248 | orig_node->bcast_own_sum = kzalloc(size, GFP_ATOMIC); |
| 249 | |
| 250 | INIT_LIST_HEAD(&orig_node->frag_list); |
| 251 | orig_node->last_frag_packet = 0; |
| 252 | |
| 253 | if (!orig_node->bcast_own_sum) |
| 254 | goto free_bcast_own; |
| 255 | |
Sven Eckelmann | 03fc7f8 | 2012-05-12 18:34:00 +0200 | [diff] [blame] | 256 | hash_added = batadv_hash_add(bat_priv->orig_hash, batadv_compare_orig, |
Sven Eckelmann | da64119 | 2012-05-12 13:48:56 +0200 | [diff] [blame] | 257 | batadv_choose_orig, orig_node, |
Sven Eckelmann | c0a5592 | 2012-05-12 13:48:55 +0200 | [diff] [blame] | 258 | &orig_node->hash_entry); |
Antonio Quartulli | 1a1f37d | 2011-07-10 00:36:36 +0200 | [diff] [blame] | 259 | if (hash_added != 0) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 260 | goto free_bcast_own_sum; |
| 261 | |
| 262 | return orig_node; |
| 263 | free_bcast_own_sum: |
| 264 | kfree(orig_node->bcast_own_sum); |
| 265 | free_bcast_own: |
| 266 | kfree(orig_node->bcast_own); |
| 267 | free_orig_node: |
| 268 | kfree(orig_node); |
| 269 | return NULL; |
| 270 | } |
| 271 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 272 | static bool |
| 273 | batadv_purge_orig_neighbors(struct batadv_priv *bat_priv, |
| 274 | struct batadv_orig_node *orig_node, |
| 275 | struct batadv_neigh_node **best_neigh_node) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 276 | { |
Marek Lindner | 9591a79 | 2010-12-12 21:57:11 +0000 | [diff] [blame] | 277 | struct hlist_node *node, *node_tmp; |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 278 | struct batadv_neigh_node *neigh_node; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 279 | bool neigh_purged = false; |
Marek Lindner | 0b0094e | 2012-03-01 15:35:20 +0800 | [diff] [blame] | 280 | unsigned long last_seen; |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 281 | struct batadv_hard_iface *if_incoming; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 282 | |
| 283 | *best_neigh_node = NULL; |
| 284 | |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 285 | spin_lock_bh(&orig_node->neigh_list_lock); |
| 286 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 287 | /* for all neighbors towards this originator ... */ |
Marek Lindner | 9591a79 | 2010-12-12 21:57:11 +0000 | [diff] [blame] | 288 | hlist_for_each_entry_safe(neigh_node, node, node_tmp, |
| 289 | &orig_node->neigh_list, list) { |
Sven Eckelmann | 1eda58b | 2012-05-12 13:48:58 +0200 | [diff] [blame] | 290 | last_seen = neigh_node->last_seen; |
| 291 | if_incoming = neigh_node->if_incoming; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 292 | |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 293 | if ((batadv_has_timed_out(last_seen, BATADV_PURGE_TIMEOUT)) || |
Sven Eckelmann | e9a4f29 | 2012-06-03 22:19:19 +0200 | [diff] [blame] | 294 | (if_incoming->if_status == BATADV_IF_INACTIVE) || |
| 295 | (if_incoming->if_status == BATADV_IF_NOT_IN_USE) || |
| 296 | (if_incoming->if_status == BATADV_IF_TO_BE_REMOVED)) { |
Sven Eckelmann | e9a4f29 | 2012-06-03 22:19:19 +0200 | [diff] [blame] | 297 | if ((if_incoming->if_status == BATADV_IF_INACTIVE) || |
| 298 | (if_incoming->if_status == BATADV_IF_NOT_IN_USE) || |
| 299 | (if_incoming->if_status == BATADV_IF_TO_BE_REMOVED)) |
Sven Eckelmann | 39c75a5 | 2012-06-03 22:19:22 +0200 | [diff] [blame] | 300 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
Sven Eckelmann | 1eda58b | 2012-05-12 13:48:58 +0200 | [diff] [blame] | 301 | "neighbor purge: originator %pM, neighbor: %pM, iface: %s\n", |
| 302 | orig_node->orig, neigh_node->addr, |
| 303 | if_incoming->net_dev->name); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 304 | else |
Sven Eckelmann | 39c75a5 | 2012-06-03 22:19:22 +0200 | [diff] [blame] | 305 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
Sven Eckelmann | 1eda58b | 2012-05-12 13:48:58 +0200 | [diff] [blame] | 306 | "neighbor timeout: originator %pM, neighbor: %pM, last_seen: %u\n", |
| 307 | orig_node->orig, neigh_node->addr, |
| 308 | jiffies_to_msecs(last_seen)); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 309 | |
| 310 | neigh_purged = true; |
Marek Lindner | 9591a79 | 2010-12-12 21:57:11 +0000 | [diff] [blame] | 311 | |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 312 | hlist_del_rcu(&neigh_node->list); |
Sven Eckelmann | 30d3c51 | 2012-05-12 02:09:36 +0200 | [diff] [blame] | 313 | batadv_bonding_candidate_del(orig_node, neigh_node); |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 314 | batadv_neigh_node_free_ref(neigh_node); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 315 | } else { |
| 316 | if ((!*best_neigh_node) || |
| 317 | (neigh_node->tq_avg > (*best_neigh_node)->tq_avg)) |
| 318 | *best_neigh_node = neigh_node; |
| 319 | } |
| 320 | } |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 321 | |
| 322 | spin_unlock_bh(&orig_node->neigh_list_lock); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 323 | return neigh_purged; |
| 324 | } |
| 325 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 326 | static bool batadv_purge_orig_node(struct batadv_priv *bat_priv, |
| 327 | struct batadv_orig_node *orig_node) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 328 | { |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 329 | struct batadv_neigh_node *best_neigh_node; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 330 | |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 331 | if (batadv_has_timed_out(orig_node->last_seen, |
| 332 | 2 * BATADV_PURGE_TIMEOUT)) { |
Sven Eckelmann | 39c75a5 | 2012-06-03 22:19:22 +0200 | [diff] [blame] | 333 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
Sven Eckelmann | 1eda58b | 2012-05-12 13:48:58 +0200 | [diff] [blame] | 334 | "Originator timeout: originator %pM, last_seen %u\n", |
| 335 | orig_node->orig, |
| 336 | jiffies_to_msecs(orig_node->last_seen)); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 337 | return true; |
| 338 | } else { |
Sven Eckelmann | 03fc7f8 | 2012-05-12 18:34:00 +0200 | [diff] [blame] | 339 | if (batadv_purge_orig_neighbors(bat_priv, orig_node, |
| 340 | &best_neigh_node)) |
Sven Eckelmann | 30d3c51 | 2012-05-12 02:09:36 +0200 | [diff] [blame] | 341 | batadv_update_route(bat_priv, orig_node, |
| 342 | best_neigh_node); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 343 | } |
| 344 | |
| 345 | return false; |
| 346 | } |
| 347 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 348 | static void _batadv_purge_orig(struct batadv_priv *bat_priv) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 349 | { |
Sven Eckelmann | 5bf74e9 | 2012-06-05 22:31:28 +0200 | [diff] [blame] | 350 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 351 | struct hlist_node *node, *node_tmp; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 352 | struct hlist_head *head; |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 353 | spinlock_t *list_lock; /* spinlock to protect write access */ |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 354 | struct batadv_orig_node *orig_node; |
Antonio Quartulli | c90681b | 2011-10-05 17:05:25 +0200 | [diff] [blame] | 355 | uint32_t i; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 356 | |
| 357 | if (!hash) |
| 358 | return; |
| 359 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 360 | /* for all origins... */ |
| 361 | for (i = 0; i < hash->size; i++) { |
| 362 | head = &hash->table[i]; |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 363 | list_lock = &hash->list_locks[i]; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 364 | |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 365 | spin_lock_bh(list_lock); |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 366 | hlist_for_each_entry_safe(orig_node, node, node_tmp, |
| 367 | head, hash_entry) { |
Sven Eckelmann | 03fc7f8 | 2012-05-12 18:34:00 +0200 | [diff] [blame] | 368 | if (batadv_purge_orig_node(bat_priv, orig_node)) { |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 369 | if (orig_node->gw_flags) |
Sven Eckelmann | 7cf06bc | 2012-05-12 02:09:29 +0200 | [diff] [blame] | 370 | batadv_gw_node_delete(bat_priv, |
| 371 | orig_node); |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 372 | hlist_del_rcu(node); |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 373 | batadv_orig_node_free_ref(orig_node); |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 374 | continue; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 375 | } |
| 376 | |
Sven Eckelmann | 1eda58b | 2012-05-12 13:48:58 +0200 | [diff] [blame] | 377 | if (batadv_has_timed_out(orig_node->last_frag_packet, |
Sven Eckelmann | 4d5d2db8 | 2012-06-03 22:19:15 +0200 | [diff] [blame] | 378 | BATADV_FRAG_TIMEOUT)) |
Sven Eckelmann | 88ed1e77 | 2012-05-12 02:09:40 +0200 | [diff] [blame] | 379 | batadv_frag_list_free(&orig_node->frag_list); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 380 | } |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 381 | spin_unlock_bh(list_lock); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 382 | } |
| 383 | |
Sven Eckelmann | 7cf06bc | 2012-05-12 02:09:29 +0200 | [diff] [blame] | 384 | batadv_gw_node_purge(bat_priv); |
| 385 | batadv_gw_election(bat_priv); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 386 | } |
| 387 | |
Sven Eckelmann | 03fc7f8 | 2012-05-12 18:34:00 +0200 | [diff] [blame] | 388 | static void batadv_purge_orig(struct work_struct *work) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 389 | { |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 390 | struct delayed_work *delayed_work; |
| 391 | struct batadv_priv *bat_priv; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 392 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 393 | delayed_work = container_of(work, struct delayed_work, work); |
| 394 | bat_priv = container_of(delayed_work, struct batadv_priv, orig_work); |
Sven Eckelmann | 03fc7f8 | 2012-05-12 18:34:00 +0200 | [diff] [blame] | 395 | _batadv_purge_orig(bat_priv); |
Antonio Quartulli | 7241444 | 2012-12-25 13:14:37 +0100 | [diff] [blame] | 396 | queue_delayed_work(batadv_event_workqueue, |
| 397 | &bat_priv->orig_work, |
| 398 | msecs_to_jiffies(BATADV_ORIG_WORK_PERIOD)); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 399 | } |
| 400 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 401 | void batadv_purge_orig_ref(struct batadv_priv *bat_priv) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 402 | { |
Sven Eckelmann | 03fc7f8 | 2012-05-12 18:34:00 +0200 | [diff] [blame] | 403 | _batadv_purge_orig(bat_priv); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 404 | } |
| 405 | |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 406 | int batadv_orig_seq_print_text(struct seq_file *seq, void *offset) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 407 | { |
| 408 | struct net_device *net_dev = (struct net_device *)seq->private; |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 409 | struct batadv_priv *bat_priv = netdev_priv(net_dev); |
Sven Eckelmann | 5bf74e9 | 2012-06-05 22:31:28 +0200 | [diff] [blame] | 410 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 411 | struct hlist_node *node, *node_tmp; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 412 | struct hlist_head *head; |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 413 | struct batadv_hard_iface *primary_if; |
| 414 | struct batadv_orig_node *orig_node; |
| 415 | struct batadv_neigh_node *neigh_node, *neigh_node_tmp; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 416 | int batman_count = 0; |
| 417 | int last_seen_secs; |
| 418 | int last_seen_msecs; |
Sven Eckelmann | 0aca236 | 2012-06-19 20:26:30 +0200 | [diff] [blame] | 419 | unsigned long last_seen_jiffies; |
Antonio Quartulli | c90681b | 2011-10-05 17:05:25 +0200 | [diff] [blame] | 420 | uint32_t i; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 421 | |
Marek Lindner | 30da63a | 2012-08-03 17:15:46 +0200 | [diff] [blame] | 422 | primary_if = batadv_seq_print_text_primary_if_get(seq); |
| 423 | if (!primary_if) |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 424 | goto out; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 425 | |
Sven Eckelmann | 44c4349 | 2011-07-05 10:42:51 +0200 | [diff] [blame] | 426 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s)]\n", |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 427 | BATADV_SOURCE_VERSION, primary_if->net_dev->name, |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 428 | primary_if->net_dev->dev_addr, net_dev->name); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 429 | seq_printf(seq, " %-15s %s (%s/%i) %17s [%10s]: %20s ...\n", |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 430 | "Originator", "last-seen", "#", BATADV_TQ_MAX_VALUE, |
| 431 | "Nexthop", "outgoingIF", "Potential nexthops"); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 432 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 433 | for (i = 0; i < hash->size; i++) { |
| 434 | head = &hash->table[i]; |
| 435 | |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 436 | rcu_read_lock(); |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 437 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 438 | neigh_node = batadv_orig_node_get_router(orig_node); |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 439 | if (!neigh_node) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 440 | continue; |
| 441 | |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 442 | if (neigh_node->tq_avg == 0) |
| 443 | goto next; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 444 | |
Sven Eckelmann | 0aca236 | 2012-06-19 20:26:30 +0200 | [diff] [blame] | 445 | last_seen_jiffies = jiffies - orig_node->last_seen; |
| 446 | last_seen_msecs = jiffies_to_msecs(last_seen_jiffies); |
| 447 | last_seen_secs = last_seen_msecs / 1000; |
| 448 | last_seen_msecs = last_seen_msecs % 1000; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 449 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 450 | seq_printf(seq, "%pM %4i.%03is (%3i) %pM [%10s]:", |
| 451 | orig_node->orig, last_seen_secs, |
| 452 | last_seen_msecs, neigh_node->tq_avg, |
| 453 | neigh_node->addr, |
| 454 | neigh_node->if_incoming->net_dev->name); |
| 455 | |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 456 | hlist_for_each_entry_rcu(neigh_node_tmp, node_tmp, |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 457 | &orig_node->neigh_list, list) { |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 458 | seq_printf(seq, " %pM (%3i)", |
| 459 | neigh_node_tmp->addr, |
| 460 | neigh_node_tmp->tq_avg); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 461 | } |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 462 | |
| 463 | seq_printf(seq, "\n"); |
| 464 | batman_count++; |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 465 | |
| 466 | next: |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 467 | batadv_neigh_node_free_ref(neigh_node); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 468 | } |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 469 | rcu_read_unlock(); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 470 | } |
| 471 | |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 472 | if (batman_count == 0) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 473 | seq_printf(seq, "No batman nodes in range ...\n"); |
| 474 | |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 475 | out: |
| 476 | if (primary_if) |
Sven Eckelmann | e5d8925 | 2012-05-12 13:48:54 +0200 | [diff] [blame] | 477 | batadv_hardif_free_ref(primary_if); |
Marek Lindner | 30da63a | 2012-08-03 17:15:46 +0200 | [diff] [blame] | 478 | return 0; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 479 | } |
| 480 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 481 | static int batadv_orig_node_add_if(struct batadv_orig_node *orig_node, |
| 482 | int max_if_num) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 483 | { |
| 484 | void *data_ptr; |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 485 | size_t data_size, old_size; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 486 | |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 487 | data_size = max_if_num * sizeof(unsigned long) * BATADV_NUM_WORDS; |
| 488 | old_size = (max_if_num - 1) * sizeof(unsigned long) * BATADV_NUM_WORDS; |
| 489 | data_ptr = kmalloc(data_size, GFP_ATOMIC); |
Joe Perches | 320f422 | 2011-08-29 14:17:24 -0700 | [diff] [blame] | 490 | if (!data_ptr) |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 491 | return -ENOMEM; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 492 | |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 493 | memcpy(data_ptr, orig_node->bcast_own, old_size); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 494 | kfree(orig_node->bcast_own); |
| 495 | orig_node->bcast_own = data_ptr; |
| 496 | |
| 497 | data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); |
Joe Perches | 320f422 | 2011-08-29 14:17:24 -0700 | [diff] [blame] | 498 | if (!data_ptr) |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 499 | return -ENOMEM; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 500 | |
| 501 | memcpy(data_ptr, orig_node->bcast_own_sum, |
| 502 | (max_if_num - 1) * sizeof(uint8_t)); |
| 503 | kfree(orig_node->bcast_own_sum); |
| 504 | orig_node->bcast_own_sum = data_ptr; |
| 505 | |
| 506 | return 0; |
| 507 | } |
| 508 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 509 | int batadv_orig_hash_add_if(struct batadv_hard_iface *hard_iface, |
| 510 | int max_if_num) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 511 | { |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 512 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
Sven Eckelmann | 5bf74e9 | 2012-06-05 22:31:28 +0200 | [diff] [blame] | 513 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 514 | struct hlist_node *node; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 515 | struct hlist_head *head; |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 516 | struct batadv_orig_node *orig_node; |
Antonio Quartulli | c90681b | 2011-10-05 17:05:25 +0200 | [diff] [blame] | 517 | uint32_t i; |
| 518 | int ret; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 519 | |
| 520 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 521 | * if_num |
| 522 | */ |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 523 | for (i = 0; i < hash->size; i++) { |
| 524 | head = &hash->table[i]; |
| 525 | |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 526 | rcu_read_lock(); |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 527 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
Marek Lindner | 2ae2daf | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 528 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
Sven Eckelmann | 03fc7f8 | 2012-05-12 18:34:00 +0200 | [diff] [blame] | 529 | ret = batadv_orig_node_add_if(orig_node, max_if_num); |
Marek Lindner | 2ae2daf | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 530 | spin_unlock_bh(&orig_node->ogm_cnt_lock); |
| 531 | |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 532 | if (ret == -ENOMEM) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 533 | goto err; |
| 534 | } |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 535 | rcu_read_unlock(); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 536 | } |
| 537 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 538 | return 0; |
| 539 | |
| 540 | err: |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 541 | rcu_read_unlock(); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 542 | return -ENOMEM; |
| 543 | } |
| 544 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 545 | static int batadv_orig_node_del_if(struct batadv_orig_node *orig_node, |
Sven Eckelmann | 03fc7f8 | 2012-05-12 18:34:00 +0200 | [diff] [blame] | 546 | int max_if_num, int del_if_num) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 547 | { |
| 548 | void *data_ptr = NULL; |
| 549 | int chunk_size; |
| 550 | |
| 551 | /* last interface was removed */ |
| 552 | if (max_if_num == 0) |
| 553 | goto free_bcast_own; |
| 554 | |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 555 | chunk_size = sizeof(unsigned long) * BATADV_NUM_WORDS; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 556 | data_ptr = kmalloc(max_if_num * chunk_size, GFP_ATOMIC); |
Joe Perches | 320f422 | 2011-08-29 14:17:24 -0700 | [diff] [blame] | 557 | if (!data_ptr) |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 558 | return -ENOMEM; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 559 | |
| 560 | /* copy first part */ |
| 561 | memcpy(data_ptr, orig_node->bcast_own, del_if_num * chunk_size); |
| 562 | |
| 563 | /* copy second part */ |
Sven Eckelmann | 38e3c5f | 2011-05-14 23:14:49 +0200 | [diff] [blame] | 564 | memcpy((char *)data_ptr + del_if_num * chunk_size, |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 565 | orig_node->bcast_own + ((del_if_num + 1) * chunk_size), |
| 566 | (max_if_num - del_if_num) * chunk_size); |
| 567 | |
| 568 | free_bcast_own: |
| 569 | kfree(orig_node->bcast_own); |
| 570 | orig_node->bcast_own = data_ptr; |
| 571 | |
| 572 | if (max_if_num == 0) |
| 573 | goto free_own_sum; |
| 574 | |
| 575 | data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); |
Joe Perches | 320f422 | 2011-08-29 14:17:24 -0700 | [diff] [blame] | 576 | if (!data_ptr) |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 577 | return -ENOMEM; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 578 | |
| 579 | memcpy(data_ptr, orig_node->bcast_own_sum, |
| 580 | del_if_num * sizeof(uint8_t)); |
| 581 | |
Sven Eckelmann | 38e3c5f | 2011-05-14 23:14:49 +0200 | [diff] [blame] | 582 | memcpy((char *)data_ptr + del_if_num * sizeof(uint8_t), |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 583 | orig_node->bcast_own_sum + ((del_if_num + 1) * sizeof(uint8_t)), |
| 584 | (max_if_num - del_if_num) * sizeof(uint8_t)); |
| 585 | |
| 586 | free_own_sum: |
| 587 | kfree(orig_node->bcast_own_sum); |
| 588 | orig_node->bcast_own_sum = data_ptr; |
| 589 | |
| 590 | return 0; |
| 591 | } |
| 592 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 593 | int batadv_orig_hash_del_if(struct batadv_hard_iface *hard_iface, |
| 594 | int max_if_num) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 595 | { |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 596 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
Sven Eckelmann | 5bf74e9 | 2012-06-05 22:31:28 +0200 | [diff] [blame] | 597 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 598 | struct hlist_node *node; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 599 | struct hlist_head *head; |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 600 | struct batadv_hard_iface *hard_iface_tmp; |
| 601 | struct batadv_orig_node *orig_node; |
Antonio Quartulli | c90681b | 2011-10-05 17:05:25 +0200 | [diff] [blame] | 602 | uint32_t i; |
| 603 | int ret; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 604 | |
| 605 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 606 | * if_num |
| 607 | */ |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 608 | for (i = 0; i < hash->size; i++) { |
| 609 | head = &hash->table[i]; |
| 610 | |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 611 | rcu_read_lock(); |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 612 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
Marek Lindner | 2ae2daf | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 613 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
Sven Eckelmann | 03fc7f8 | 2012-05-12 18:34:00 +0200 | [diff] [blame] | 614 | ret = batadv_orig_node_del_if(orig_node, max_if_num, |
| 615 | hard_iface->if_num); |
Marek Lindner | 2ae2daf | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 616 | spin_unlock_bh(&orig_node->ogm_cnt_lock); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 617 | |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 618 | if (ret == -ENOMEM) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 619 | goto err; |
| 620 | } |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 621 | rcu_read_unlock(); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 622 | } |
| 623 | |
| 624 | /* renumber remaining batman interfaces _inside_ of orig_hash_lock */ |
| 625 | rcu_read_lock(); |
Sven Eckelmann | 3193e8f | 2012-05-12 02:09:42 +0200 | [diff] [blame] | 626 | list_for_each_entry_rcu(hard_iface_tmp, &batadv_hardif_list, list) { |
Sven Eckelmann | e9a4f29 | 2012-06-03 22:19:19 +0200 | [diff] [blame] | 627 | if (hard_iface_tmp->if_status == BATADV_IF_NOT_IN_USE) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 628 | continue; |
| 629 | |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 630 | if (hard_iface == hard_iface_tmp) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 631 | continue; |
| 632 | |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 633 | if (hard_iface->soft_iface != hard_iface_tmp->soft_iface) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 634 | continue; |
| 635 | |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 636 | if (hard_iface_tmp->if_num > hard_iface->if_num) |
| 637 | hard_iface_tmp->if_num--; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 638 | } |
| 639 | rcu_read_unlock(); |
| 640 | |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 641 | hard_iface->if_num = -1; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 642 | return 0; |
| 643 | |
| 644 | err: |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 645 | rcu_read_unlock(); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 646 | return -ENOMEM; |
| 647 | } |